Got mine from Gendan uk. Ordered at 16:30 one day got conformation email of order and was sent 10min later got it at 12 the following day. You'll need a windows based pc, laptop. The Ross tech website gives you the operating system it supports...xp..vista etc. It cost about £263 thats all in. You then fire up the laptop go to the website download VCDS software. You then follow the instruction that come with the cable, which are also available on the website Rosstech. Then plug into the car..me thinks then it registers a unique long number. This number plus the number on the dongle allows you to register on the Ross tech website for support.